Nitzschia reversa

W. Smith 1853      Category: Nitzschioid
BASIONYM: Nitzschia reversa W. Smith 1853

Nitzschia regula var. robusta

 

Nitzschia semirobusta

LM scalebar = 10 µm = 40 pixels.



Observations

Contributor: Pat Kociolek - September 2011
Length Range: 35-75 µm
Width Range: 2.5-4.5 µm
Striae in 10 µm:

Description

The valves are spindle shaped, with parallel margins and abruptly tapering apices with the ends turned in opposite directions. The fibulae are small and evident along the length of the valve, with a density of 14-20 in 10 µm. The central nodule is evident. Striae are not visible in the light microscope.



Original Description

Basionym: Nitzschia reversa
Author: W. Smith 1853
Length Range: µm
Striae in 10 µm:

Original Description

Original Images


Cite This Page:
Kociolek, P. (2011). Nitzschia reversa. In Diatoms of the United States. Retrieved December 07, 2016, from http://westerndiatoms.colorado.edu/taxa/species/nitzschia_reversa

Species: Nitzschia reversa

Contributor: Pat Kociolek

Reviewer: Kalina Manoylov

Citations

Smith, W. (1853). Synopsis of British Diatomaceae. John Van Voorst, London 1853. 89 pp., pls 1-31.

Links & ID's

Index Nominum Algarum (INA)

Transfer INA

California Academy of Sciences (CAS)

Nitzschia reversa CAS

North American Diatom Ecological Database (NADED)

NADED ID: 48174

Autecology Discussion

EMAP Assessment

The Environmental Protection Agency (EPA) western Environmental Monitoring and Assessment Program (EMAP) study was completed during the years 2000-2004 (see citations at bottom of this page). Over 1200 streams and rivers in 12 western states (Arizona, California, Colorado, Idaho, Montana, Nevada, North Dakota, Oregon, South Dakota, Utah, Washington and Wyoming) were selected for sampling based on a stratified randomized design. This type of design insures that ecological resources are sampled in proportion to their actual geographical presence. Stratified randomized design also allows for estimates of stream length with a known confidence in several “condition classes” (good or least-disturbed, intermediately-disturbed, and poor or most-disturbed) for biotic condition, chemistry and habitat.


EMAP Distribution

Nitzschia reversa


EMAP Response Plots

Nitzschia reversa


EMAP citations

Results are published in:

Johnson, T., Hermann, K., Spaulding, S., Beyea, B., Theel, C., Sada, R., Bollman, W., Bowman, J., Larsen, A., Vining, K., Ostermiller, J., Petersen, D. Hargett, E. and Zumberge, J. (2009). An ecological assessment of USEPA Region 8 streams and rivers. U.S. Environmental Protection Agency Region 8 Report, 178 p.

Stoddard, J. L., Peck, D. V., Olsen, A. R., Larsen, D. P., Van Sickle, J., Hawkins, C. P., Hughes, R. M., Whittier, T. R., Lomnicky, G. A., Herlihy, A. T., Kaufman, P. R., Peterson, S. A., Ringold, P. L., Paulsen, S. G., and Blair, R. (2005). Environmental Monitoring and Assessment Program (EMAP) western streams and rivers statistical summary. U.S. Environmental Protection Agency Report 620/R-05/006, 1,762 p.

Stoddard, J. L., Peck, D. V., Paulsen, S. G., Van Sickle, J., Hawkins, C. P., Herlihy, A. T., Hughes, R. M., Kaufman, P. R., Larsen, D. P., Lomnicky, G. A., Olsen, A. R., Peterson, S. A., Ringold, P. L., and Whittier, T. R. (2005). An ecological assessment of western streams and rivers. U.S. Environmental Protection Agency Report 620/R-05/005, 49 p.